Dredging-machine



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WITNEEEEEI- (No Model.)

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IJRFDGING MAGHINE.

Patented'June 28, 1892.

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(LH. SOUTHER. DRBDGING MACHINE. No. 477,827. Patented June 28, 1892.

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DRBDGIN'G MAGHINE. n No. 477,827;V Patented June 28, 1892.

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C. H. SOUTHER. DREDGING MACHINE.

. No. 477,827. PatentedJune 28, 1892.

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G.H.SOUTHER.

DRBDGING MACHINE. No. 477,827. Patented June 28, 1892.

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(No Model.)

c. H.SOUTHBR.

DREDGING MACHINE.

Patented June 28, 1892.

WITNEEEEEI INVENTUR- MW@ @amd bucket; also, to the manner of connecting the UNiTnn STA-Tres'- OHARLES H. SOUTHER, OF

DREDGING- srEcIFIoAf'rIoN forming pm of Leu-.ers

`BOSTON, MASSACHUSETTS.

MACHINE.

lPatent. N o. 477,827,`dated J' une 28, 1892.

Application filed Jimmy 26, 1891. serial No. 379.205. (No model.)

To all whom it may concern,.-

Be it known that I, CHARLES I-I. SOUTHER, a citizen of the United States, residing at Boston, in the county of Suffolk and Stateof Massachusetts, have invented a new and useful Improvementin Dredging-Machines, of Whichthe following is a full,clear, and exact description, reference being had to the accompan ying drawings, forming a part of this specication, in explaining its nature. f

The invention relates to dredging-machines having Ywhat is known as a scoop-bucket, and itA comprises a bucket of'novcl construction having twomouths o r openings, preferably upon opposite sides, wherebyit isadapted to be operative Whichever Wayit is caused to be moved in making what is known asa cutg also, to the combination of 'such double-acting bucket with an exhausting device or pump; also, to the construction of the same with the dredging boat or support and to the means for operating or moving the bucket both vertically and horizontally; also, to a valve for alternately connecting the operative sections of the bucket With the exhaust pipe or device; also, to a scoop of the character specified having a device for breaking up the material forced into its cavity by the action of the scoop to better prepare it for passage through the exhaust-pipe; also, to various other 'features of construction, which will hereinafter be more fully described.

Referring to the drawings, Figure l represents,principally in longitudinal vertical section, a dredging-boat having the features of my invention. Fig. 2 is a view in plan there-A of and of certain necessary ad juncts, to which reference will hereinafter be made. Fig. 3 is a view, enlarged, showing, principally in front elevation, the scoop and-devices for suspending it and giving it vertical movement. Fig. et is a detail view, in section and side elevation, to further illustrate said mechanism. Fig.5 is a view, principally in horizontal section, upon the dotted line of Fig. 3. Fig. 6 is a View, enlarged, in horizontal section, of the bucket and a portion of the exhausting-pipe. Fig.7 is a view, enlarged,principally in front elevation, of the bucket. and attachments, a portion of the vertical wall of one end of the Will hereinafter be described. `Fig.'l0 is also a view, principally in side elevation, of a modified form of the connection between the scoop and the exhausting-pump on the dredging-boat. Y f

Referring to the drawings, A represents the dredging-boat or boat supporting the operative parts of the machine. It carries at its rear end a the spuds ac2 and suitable mechanism for operating the saine. These spuds are alternately used as pivots upon which the boat is swung, as hereinafter specified. The forward end a3 of theV boat is formed with a channel A in its bottom extending from the point'c. This end of the boat supports a frame-work B, which extends beyond the end of the boat and provides vertical guides and supports Z9 Z9 for the slide rods orsupports Z92 b2 and Z93 Z93 and rack-harsh6 Z97 of the scoop C, the slide-rod or supports and rack-bars being separated from each other by very nearly the length of the scoop and being attached,

respectively, to each end of the scoop by pivots Z94 Z95, Which extend through ears upon the scoop and the ends ofthe rods.

The bucket vor scoop C and the slide rods or bars Z92 Z93 are provided with Vertical movementby the rack-bars Z96 Z97, with which the pinions Z9s b9 respectively engage. The pinions are su pported by shafts Z910 Z91l and the shafts have suitable bearings in the framework B and standards Z912 upon the deck of the boat. The shaft Z910 has a worm-wheel Z913 at its front end and the shaft Z911 a Wormwheel Z911 at its front end. There is arranged to engage the worm-wheel Z918 the Worm Z915, and thewormfwheel Z911 the Worm Z916. (See Figs. 3, 4, and 5.) These Worms are carried by a common operative shaft 517, which is free to turn in the Worms, Aexcepting when engaged with one or both of them by a clutch, and for this purpose the Worm Z915 has at its end the member Z918 of a clutch, With which the rotary member Z91J of a`clutch is to be engaged by means of a lever Z920 or in any bucketl being removed to show its interior other desired way. (See Fig. 5J The worm IOO adapted b1 has a member b21 of a clutch, with which' independently of the other end and its incli-y nation varied. (See Fig. 8.)

The uprights of the frame B are in four sections D Dl and D2 D3, two on each side ofthe frame B. Each of these sections is shaped to form a guideway for the vertically-mov able bars, the sections D D thus 'forming guides and supports for the bars b2 and the`4 sections D2D3 forming guides and supports for the vertically-movable bars IJ. The bars b2 b6 b2 on one side and b3 D7 b3 on the other i are firmly united with each other.

The bucket or scoop C is made of heavy sheet -iron properly reinforced by anglebraces. It is represented in the-drawings as rectangular in plan and vertical section,ex cepting at its lower front corner, (see Fig. 9,) it ybeing represented about twice as wide as it is high. The bottom iplate c of the bucket extends its full length and is connected with the top plate c,which also extends its full lengtln'by siderplates c2 c3. Each end c4 c5 of the bucket is open. The side plate c2 is curved inwardly upouits lower side and corner to meet the bottom plate o. Each opening is provided with a knife or cutter cG c6. Each knife or cutter is formed by means of a bent.

metal plate of a shape to provide the bottom c7 and side wings cs o9, (see Figs. G and 7,)

the wings having the inclined edges C10, and.

the wings are of such size t'o lap upon the sides c2 c3 of the scoop or bucket, while the bottom cT bears against the bottom plate c of the scoop or'bucket and extends beyond its end. (See Figs. 6 and 7.)

There maybe in each mouth or opening of the bucket or scoop the metal picks, points, or projections E, fastened firmly to the bottom of the scoop and extending beyond the opening, and preferably below the same, as represented in Fig. 7, and also preferably having the fiat under surfaces or feet e and the inclined upper surfaces e', extending to the point e2 and having the pointed ends e3,

the surface e4 of the projections from the point c2 inward preferably inclined down-v ward to the inner end, the feete or lower portions of the points preferably extending through recesses formedin the front edge ot" the knife c5. These points are preferably flat at e3 and narrowedv upwardly, each of the pieces VE being formed comparatively thin at `the top and increasing in thickness from the top downward to the base. This is for the purpose of improving the clearance of the material as itpasses or is forced through the scoop or bucket. The pointsl E serve to enter the earth or material to be dredged in advance of the scoop and to loosen and break it up, so that it enters or may be forced into the mouth of the scoop or bucket more readily. In addition to these breaking-up points or projections there may be used blades F, (see Figs. G and 7,) interposed between the breakers E, but thinner than the breakers and preferably not extending beyond the edge f of the scoop. These separators are shaped to bear upon the bottom plate c and the scoop extension c5 and have an inwardly and upwardly extending curved sharpened vedge f (see Fig. 7) to the point f2. These plates F act to cut and divide the loosened material into smaller bits or masses than it otherwise would be in after it has been loosened by the points E and dragged into the mouth of the scoop, and also to prevent large rocks or other solid matter of a size too large to be forced through or handled by the pump to enter the scoop. To still further separate the mass 0f material into smaller parts, there may be used well within the mouth of the scoop a rotary breaker or separator G, comprising a shaft g, extending across the scoop chamber from side to side, having suitable bearings upon each side and at the middle, if desired,and supporting breaking or separating arms g of any desired form or shape. In thedrawings I have represented them as enlarged or widened at their ends and as obliquely placed upon the shaft.

It will be understood that each of the two operative sections of the scoop or bucket, :which for convenience I have lettered H H', respectively, are similarly equipped with the parts herein named, or as many of them as may be desirable for the material being dredged or excavated, it being understood that different materials require different treat ment-for instance, sand and gravel one, clay another, and dock-mud still another.

The two sections H H of the scoop or bucket are separated from each other by a partial partition M, which extends from the wall c2 to the point lm, and has a curved surface m on each side of the point extending to the side plate c2. This partition extends from the plate IOO IIO

'c2 about 'a third of the width of the scoopchamber and there is pivoted or otherwise secured to the point m a gate or Valve M', which serves to separate or divide the scoop' into its two operative sectionsH II', and which also alternately connects the two sections withthe hole m2 in the plate side c2, which opens into the passage m3 in the conveying or exhaust pipe m4. (See Fig. 6.) When in a position to open the section H of the scoop andy to close the section H', the end m5 of the gate or valve bears against the shoulder 'm6, (see Fig. 6,) and when in a position to close the section I-l and open the section II' it bears against the shoulder m7. In the construction represented in Fig. 6 this gate or valve is automatic in its bucket in a direction to force the material p to the pivot of the gate or valve M.

477,82*/v y l s into the section H causes the material to force or throw the gate or valve into the position represented in Fig. 6, and the draft and passage of the material and water through the opening fm2 maintains the gate or valve in this condition during the feeding movement of the scoop or bucket Vin this direction. Upon the reverse movement of the scoop or bucket the section H is no longer used, the section H, becoming operative and being forced into the bank or material. The gate or valve M is then automatically swung or moved to a position to connect the section H with the opening m2,

and this position of the gate or valve is maintained during the reverse feeding movement of the bucket or scoop.

In Figs. 8 and 7 I have represented the gate or valve as operated from the deck of the dredging-boat by meansof chains or cords m8 m9, extending from the deck to the sheaves m10 m, secured to the slide-bars b2 b3, respectively, to the lever m12 above the top plate of the scoop or bucket, and attached or secured By this means the gate or valve may be moved from the deck of the dredging-boat, as desired, and

Q may be rotated or turned in any desired way. In Fig. 9 I have represented each of them as rotated by means of the vertical shaft Q2, having a bearing at g3 upon the top of the scoop and having at its lower end a bevel-gear Q4, which meshes with the bevel-gear Q5 upon the short horizontal shaft Q6, supported by standards upon the top of the scoop or bucket. This shaft has a sprocket-wheel Q7, from which a chain Q8 passes to the sprocket-wheel Q9 upon an extension of the shaft Q through the inner side c3 of the scoop or bucket. The

vertical shaft Q2 is rotated, when desired, by the bevel-gear Q10, having a bearing at Q11, at` tached to the frame B and the bevel-gear Q12, with which the bevelgear Q19 meshes and which is upon the end of the horizontal shaft 913, operated by any convenient engine or power upQn'the boat. The vertical shaft is free to move vertically in the gear Q10 and is steadied at its upper end by the sleeve QM,`

carried by the frame B.

In Fig. 7 I have represented the vertical shaft g2 as somewhat differently placed from its position in Fig. 9 and so as to operate directly the shaft Q, the shaft in such case having a bevel-gear g15 at its end, which meshes with the bevel-gear Qlon the lower end of the vertical shaft Q2. n

The scoop or bucket is connected with a centrifugal or other exhaust-pump or equiva-t lent device N in the boat A by means of a suitable connecting conduit or pipe. This pump is represented as placed upon the lower fioor of the boat toward its front or scoop end and near the beginning of the channel A', and I have 'represented' it as connected with the two sections H H of the scoop or bucket by means of the pipe n, extending from the pump through the vertical wall a4 of the boat, and

of the scoop or bucket.

member n3 sliding in the member n2.

the extensible or telescopic pipe n', which extends from the endof the pipe n to the side This extensible pipe n is composed of the members n2 n3, the There is secured at the outer end of the pipe n one section n4 of a ball-joint and upon the mem-' ber 'n2 of the extensible pipe the othermember 715 of a ball-joint, the two members n4 and a5 of the ball-joint permitting the extensible pipe to be moved in any relation to the pipe n. The member n3 of the extensible pipe has at its lowerendthe section nof aball-j oint, and there is secured to the side plate c3 of the bucket or vscoop by the section a" of a ball-joint. This; `connection between the extensible pipe and the, bucket permits the bucket to take any re Y quired angle in relation to the extensible pipe as it ismoved or fed. In the pipe n there is placed a cut-off Valve n.8 to close or vary the size of the opening in the pipe. There is also connected with the pipe n a pipe n.9, extending through the side or bottom of the boat to ytake Water and which opens into the pipe n,

and this pipe has a valve n10, by which its opening may be closed or regulated in size.

4The object of this connection is to provide the pump with such relief as may be desired from time to time, either from the nature of the material being worked upon by the scoop or bucket or from its being clogged or partially clogged or for any other reason.

The pump discharges the dredged material through the discharge conduit or pipe nu,

' which extends through the boat to the rear end of the boat where it has branching ends nl? w13, each of which is provided with asuitable valve, (not shown,) and either one of which is adapted to be connected by pipes or conduits n,

carried upon pontons or scows or other Iioating supports n, by which the dredged material is conveyed to any desired point of ejection.

sar57 to swing the dredging-boat, and therefore the bucket, upon the Spud-pivot and at the same time to draw the scoop or dredge through the material or bank which is being excavated. This is represented as accomplished by means of two scows P P. (See Fig. 2.) These scows are anchored or made fast one upon each side of the dredging-boat and ata suitable distance therefrom, and the To operate the scoop or bucket, it is neces- IIO scoop or bucket is connected with each by means of chains or ropes, one passingv from near one front of the scoop or bucket to a sheave carried by the scow P- and thence back to a windlass or winding-drum, preferably operated by power, and the other rope or chain extending from the other end of the scoopor bucket over a sheave attached to the Y.

scow P back to a suitablewindlass or wind ing-wheel upon the dredging-boat.

In Figs. 2 and 8 I have represented each Y scow as having an yanchoring-Spud p. This spudis provided with vertical movement-in Y relation to the scow inthe ordinary way,'and

v there is arranged to slide upon the spud a;

collar or ring p. (See Fig. 8.) This collar or ring is adapted to be raised and lowered by means of chains or ropes p2, extendingv upward from it through 'the scow to wind`l lasses or winding-drums p3.

which bears at its outer end a skeleton frame p5 for supporting a sheave p6. A chain or rope P2 extends from one end of the bucket or scoop about the sheave to the winding-drumvr or windlass p7upon the deck'of the dredging-boat. A chain or rope P3 extends from the other end ofthe scoop or bucket C about a` sheave 198, attached to the spud of the scow P', and backto thewindlass or winding-drum p9 on the dredging-boat. (See Fig. 2.) The sheavechains p4 or the sheaves may be attached di` rectly to the lower ends of the spuds. I prefer,

however, to make the chain-supports vertically movable upon the spuds, as above specified,

also to connect the sheaves with the spuds by,`

chains of sufiicient length to bring the sheaves and their frames beyond the sides of the scows, so that they shall ynot'bear against the bottoms or sides of the scow and wear them or receive' injury from them. By connecting the sheaves or pulleys with thespuds they are brought near the bottom to be dredged and held there, so

that a straight or very nearly straight draft` upon the -bucket or scoop is obtained. I do not limit'myse'lf, however, to this method of i anchoring or supporting the sheaves over which the draw-chains P2 P3 pass, butprefer it as being the one-having the fewest objec` tions and most readily adapted for all occasions.

the desired level or position, when its rear end is llowered to bring the scoop or bucket to substantially ahorizontal'position. Itis then drawn through the material toward one of the scowswith'theend of the dredging-boat lby one of the draw-chains, the angle of the scoop or bucket to a horizontal plane being varied as the exigencies of the work 'may require. Vhen the scoop or bucket vhas been thus moved up'to the sheave or scow, its movement Ais reversed, and it is then fed in the opposite direction by the other draw-chain; but pre` paratory to making this second cut the scoop or bucket is set into the material by elevating the rear -end and depressing the front end until it has entered the bank to a sufficient extent, when itis moved substantially hori` zontally, and this feed movement continues until a cut has been made which extends across to the scow or sheave upon the other side, and the operation of excavating continues in this way until as many cuts have been made as are desired, when the dredging boat and scows are moved forward to bring (See Fig. 8.) Toi' this ring or sleeve p is `attached a chain p4,"

the bucket or scoop into a new operative position.

It will be seen that thegaction of the scoop or bucket is continuous in both directions;

'that one end or division of it acts when it is being drawn or fed in one direction, and

the other end or division acts when it is being drawn in the reverse direction. The drawing of the scoop or bucket through the `material to be excavated forces it into the mouth of the scoop or bucket, and it is drawn from the cavity or chamber of the scoop or 'bucket with the water with which it is mixed as it is forced into it through the conduit n by the exhausting action of the pump N.

.The plows or advance points E serve to break up or loosen the material in front of the bucket as it is moved, and the separators and rotary breakers serve to still further sep varate orbeat the mass into a condition to/be more readily drawn through the conduit n. When `the bucket or -scoop has reached the end of its movement in one direction, the

valve or gate m is changed in osition to shut loff the section of the scoop or bucket vlast operating and to open the chamber of 'the next operating-section to the exhaust-conduit. In lieu of the construction above speciiied there may be used that shown in Fig. lO, in which the supporting-bars b2 b3 of the scoop 'or bucket, instead of having a vertical move- `'ment only, are supported or held-by the frame ,B to have a tilting or swinging movement,

whereby its vertical angle may be automatically changed or varied as the inclination of the scoop or bucket from side to side varies.

' This construction is employed when the scoop or bucket is connected with the dredging-boat by a conduit or pipe which is notextensible. `Wlien such construction is employed, the scoop or bucket is raised and lowered by lmeans of a tackle, one for each end of the scoop or bucket, instead of by means of racks Sand pinions.

VWhen an inextensible pipe is used, it is connected at its upper end with the pipe n by a ball-and-socket joint or by any other form of joint which will permit thechange of the angle of the conduit in relation to it, and it is connected with the side ofthe bucket or dredge either directly or by means of a balland-socket orsimilar joint. When this construction is employed, as the excavation proceeds in depth the angle of `the scoop or bucket from side to side becomes greater to a horizontal plane, and this requires that its supports be capable of inclination. (See Fig. 10.)

lIn order that the parts at the scoop end of the boat may be elevated above thewater and easily reached for the purposes of repair or for other reasons, I have formed in the other end of the boat a water-tight-chamber R, which is adapted be filled by water when desired to sink or lower this end of the boat, and thus elevate its bucket end. There are suitable IOO TIO

water inlets and out-lets to the compartment .(notshown) and apu mp for filling and emptying 1t. While I have shown the bucket or scoop as having a single discharge-outlet common to `both operative mouths cr sections thereof, I would say that each mouth or sectlon of the bucket may have an independent orseparatedischarge-outlet and be connected by a s uitable conduit or pipe with the cxhausting device; also, that the discharge ou tlet or outlets instead of being in the inner side of the scoop or bucket may be in its top.

Vhile I have represented the draft-chains P? as extending from sheaves to power-driven wlndlasses or winding-drums upon the dredging-boat, I would say that they can be drawn by windlasses or winding-dru ms upon the scows P P.

Iconsider that a dredging boat or apparatus having two independent or separate buckets or scoops and independent discharg- 1ng conduits and apparatus, one so located that the mouth oroperative end is opposite or away froinrthe mouth other, and so that their movement shall cause one of them to be operative in one direction, and the other to be operative in the reverse dlrection, to be the mechanical equivalent of the construction which I have herein described.

The shafts g, carrying the breaking-arms, may be rotated by mechanism similar to that used in street-sweeping machines for revolving broom-shafts or in mowing-machines upon the movement of the scoop or bucket, the movements ofA the scoop causing the wheels or rolls placed upon the inner side of the bucket to rotate the shafts as the bucket is moved.

Having thus fully described my invention, I claim and desire to secure by Letters Patent ofthe United Statesl. A dredging-boat havingascoop or bucket having an operative mouth or sect-ion at each end thereof and a discharge-outlet adapted to be alternately connected with each of said operative mout-hs or sections, .substantially as described.

2. A dredging scoop or bucket having an operative mouth or section at each end, a discharge-outlet common to both mouths or sections, Aand a gate or valve for connecting either section or mouth with the dischargeoutlet and cutting out the other section or mouth, substantially as described.

3.v A dredging bucket or scoop having two operative mouths or sections, a discharge-outlet common to both operative mouths or sec` tions, avalve or'gate for cutting out one section or mouth and connecting the other section or mouth with the discharge-outlet, and devices for moving the said valve or gate from without the scoop or bucket, as and for the purposes described.

4. Ina dredging apparatusthe combination of a scoop or bucket having two operative mouths` or sections, a discharge-outlet or operative end of the scoop or bucket, a steadying and suspendingV structure or support for the same, provided with vertical movement in a frame attached to the hull or boat, and to the lower end ot' which support the scoop or bucket is hinged to be movable upon a vertical arc, a dischargeoutlet in said bucket or scoop, an exhaust pump or apparatus on said boat., a conduit connecting said discharge-outlet of the scoop .or bucket with the exhausting apparatus, a

pivot or spud upon which the hull or boat is adapted to be turned, and means fordrawing the bucket and swingingthe end of the boat upon said pivot or spud as a centenas and for the purposes described.

6. The combination of a hull or boat, aspud or pivot upon which one end of the hull or boat is adapted to be swung, a scoop orbucket having an operative mouth or section at each end thereof and connected with the swinging or movable end of the boat by two suspending supports to which the bucket or scoop is pivoted, as specified, an exhausting apparatus or pump carried by the boat, and a conduit or suction-pipe connecting the said apparatus with the operative mouths or sections of the scoop or bucket, as and for the purposes described.

7. The combination of a hull or boat, a spud or pivot upon which one end of the hull or boat is adapted to be swung, a scoop or' bucket having an operative mouth or section at eachV end thereof and connected with the swinging or movable eii'd of the boat by two suspending supports to which the bucket or scoop is pivoted, as specified, an exhausting apparatus or pump carried by the boat, a conduit or suction-pipe connecting the said apparatus with the operative mouths or sections of the scoop or bucket, and means for varying the longitudinalinclination of the bucket, as and for the purposes described.

8. The combination of ahull orboat,aspud or pivot upon which one end of the boat is adapted to befswung, a bucket or scoop having two operative mouths or sections secured to the movable end of the dredging-boat to be vertically movable or adjustable in relation thereto, and rack-bars connected with said scoop or bucket and pinions for engaging said bars, an exhaust pump or apparatus 'upon the boat, and a conduit or suction-pipe connecting the two mouths or sections ofthe scoop or bucket therewith, as and for the purposes described. i

9. The combination of a hullor boat,oue or more spuds or pivotsupon which one end of the boat is adapted v to be turned or swung, a

TOO

IIO

scoop or bucket having two operative mouths or sections arranged back to back in a common non-rotating frame suspended from the movable or swinging end of said boat, an exhaust pump or apparatus carried by said boat, a suction pipe connecting the operative mouths or sections of said dredge With the exhaust-pump, and one or more draw chains or ropes extending from the bucket or scoop to one or more power-driven windlasses or winding-dru ms, as and for the purposes described.

l0. The combination of aboat orhull, one or more spuds upon which one end of the boat is adapted to be swung or moved, a suspended bucket or scoop having two operative mouths or sections carried by the swinging or movable end of the boat, one of which mouths or sections is operative when the boat is movable in one direction and the other of which mouths or sections is operative when the boat is movable in the opposite direction,an exhaust pump or apparatus carried by the boat, a suction-pipe or conduit connecting the mouths or chambers alternately as they are operated with said exhaust apparatus, and

draw chains or ropes extending from each end4 of the scoop or bucket to anchored sheaves or pulleys located in relation to the operative end of the dredging-boat, as specified, and thence to the Windlasses or winding-drums upon the said dredge or boat, as and for the purposes described.

ll. In combination, a dredging-boat one end of which is inovable,.a scoop or bucket having two operative mouths or sections suspended from the movable end of said boat and adapted to be longitudinally inclined to depress either end thereof, an exhaust pump or apparatus carried by the boat, a conduit or suction-pipe connecting both operative mouths or sections of the scoop or bucket with the said apparatus, and drawing devices for drawing the endf'ot` vthe dredge or boat successively in opposite directions, as and for the purposes described.

12. A swinging or movable dredging-boat having a suspended vertically-movable longitudinally-tipping scoop or bucket provided with two operative mouths or sectionsback to back and a discharging lapparatus therefor, as and for the purposes described.

13. AA swinging or movable dredging-boat having a suspended vertically-movable longitudinally-tipping scoop or bucket provided with two operative mouths or sections back to back and a discharging apparatus therefor and also .movable toward and from the end of theboat, substantially as described.

14. The combination of a boat or hull, a suspended bucket or scoop of the character speciiechheld with its mouth always pointed and opened in the direction in which the bucketis moved,adischarge-opening,passage, or conduit therefor, and a sheave anchored at one end of the cut which the said scoop or bucket is to make and upon or approximating the line of said cut, and a draft chain or rope extending from said scoop or bucketover said sheave thus located to a windlass or WindingdrumJ as and for the purposes described.

15. The combination of a boat or hull having a suspended bucket or scoop provided with a discharge or suction pipe or conduit, a sheave or pulley located upon or near the line 1n which the bucket is moved, a draft chain or rope extending from the bucket over. said sheave or pulley, and devices for adjusting or moving the sheave or pulley vertically, as and for the purposes described.

16. The combination of a dredging-boat, a scoop or bucket carried thereby, a scoW anchored at or near one end of the cut or path of the scoop or bucket, a spud carried thereby, a sheave or pulley attached to said spud, and a draw chain or rope extending from the bucket or scoop over said sheave or pulley to a Windlass or winding-drum, substantially as described.

17. The combination of a hull or boat having a suspended scoop or bucket, a discharge or exhaust passage or conduit connected therewith, a scoW or ponton anchored at one side of the dredge, a spud carried thereby, a collar or support vertically movable upon said spud, a sheave or pulley attached to said movable collar or support, and a draw chain or rope extending from said scoop or bucket over said sheave or pulley to a windlass or Winding-drum, substantially as described.

1S. The combination of a'hull orboat having a suspended bucket, a discharge or exhaust pipe or conduit extending from the bucket, an anchored ponton or scoW, a sheave or pulley attached to the scoW or ponton ora post or spu'd secured thereto to be beyond the side thereof, and a draft chain or cord extending from the bucket or scoop over the said sheave or pulley to a Windlass or windingdrum, substantially as described.

19. The combination of a dredging-boat, a dredging apparatus carried by said boat, having two oppositely arranged or located scooping-mouths or operating-sections adjustable in relation to said boat and provided With suitable discharge or exhaust passage or passages, an anchored ponton or scow upon each side of the dredge, a pulleyor sheave for each pontonor scoW',support.ed in Whole or in part thereby, and tWo draw cords or chains, one of which extends from one end of the apparatus over one of the sheaves or pulleys to a windlass or Winding-drum and serves to operate or draw the dredge in one direction, and the other of Which chains or ropes extends from the other end ot" the apparatus over the other sheave or pulley to a Windlass or Windingdrum and serves to draw the dredge in the opposite or reverse direction, as and for the purposes described. t

20. The combination of the scoop or bucket C, having the operative mouths 0r sections H I'I, the vertically-movable suspending bars b2 b3, attached to the scoop or bucket, re spectively, at each end thereof, as specified,

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the rack-bars and racks thereon, the pinions bs b9, the shafts blo b, the worm-wheels 1913614 thereon, the worms 515 Z916, loose upon the shaft b and having members bis b21 of clutches, and the members 1919 Z322 of clutches independently lsecured to said shaft b17 to be engaged, re-

22. The scoop or bucket C, having the opi erative mouths orsections H H', the dischargeoutlet m2, centrally located in relation to both mouths or sections, the partial partition M, having the curved surfaces m', and the valve M', substantially as described.

23. The bucket or scoop C, having the operative mouths or sections H H and the curved outer side and corner c2, as and for the purposes described.

24. The scoop or bucket C, having the op-l erative mouths or sections H H and formed, substantially as specified, with the reinforcing scoop end pieces c5, substantially as described.

25. The scoop or bucket C, having the operative mouths or sections H H and the independent teeth or points E, shaped substantially as specified and extending from each mouth near and at the bottom thereof, as and for the purposes described.

26. A bucket having an end mouth H, a discharge-outlet m2, and the teeth or picks E, having the straight or substantially straight lower surfaces e, which extend below the line of the under surface of the scoop and act as feet or shoes, as and for the purposes described.

27. A bucket having an end mouth H, a discharge-outlet m2, and the teeth or picks E, having the straight or substantially straight lower surfaces e, which extend below theline of the under surface of the scoop and act as feet or shoes and also having the inclined surfaces c', extending from their points c3 to or substantially to the mouth of the bucket, as and for the purposes described.

2S. The scoop or bucket having the discharge-outlet m2 and picks or teeth E, extending therefrom, having wide tapering points e3 and decreased in thickness from their lower ward to the point e2, and then downward, as

and for the purposesdescribed.

29. The bucket or scoop having an opening at one end, the discharge--outlet fm2, and the stationary separators F, substantially as de scribed.

3 0. The bucket or scoop having an end opening, a discharge-outlet m2, the scoop end c5, the picks or teeth E, shaped as specified, and the separators F, substantially as described.

31. The combination of the bucket having an end opening, the outlet m2, and the rotary separator G, substantially as described. v

32. A bucket having an end receiving-opening, a side discharge-outlet m2, the teeth or picksy E, the stationary separators F, and the rotary breakers G, substantially as described.

33. A combined bucket or scoop having two operative mouths or sections H H', a separate outlet for each mouth or section,and picks or teeth and separators in each mouth or section, as and for the purposes described.

34. The combination of the slide-scoop or bucket having a receiving-mouth at one end, the rotary breaker G, and a vertical movable rotary shaft connected with the shaft of said breaker to rotate it, as and for the purposes described.

35. The scoop or bucket having the side discharge-outlet and a section of a ball-joint secured to theV side of the bucket about said outlet, anda conduit or suction-pipe having at its end the other section ofthe ball-andsocket joint connected with the first-named section of said joint, as and for the purposes described.

36. A dredging-boat having at one end the section or extension asupporting the frame B, a bucket or scoop and its suspending bars carried by said frame B, a suction pipe or conduit connecting the bucket or scoop With an exhaust-pump upon the scoW, extending through the end a4 of the boat, as specified,

and a compartment in the other endof said boat,V adapted to be `filled with water to depress said end of the boat and elevate the bucket end, as and for the purposes described.

UHARLESI-I. SOUTHER. Vitnesses:

F. F. RAYMOND, 2d, J. M. DOLAN.

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